2105545965 has 16 divisors (see below), whose sum is σ = 3567043008. Its totient is φ = 1056901376.

The previous prime is 2105545951. The next prime is 2105545979. The reversal of 2105545965 is 5695455012.

It is an interprime number because it is at equal distance from previous prime (2105545951) and next prime (2105545979).

It is a cyclic number.

It is not a de Polignac number, because 2105545965 - 2⁶ = 2105545901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4128267 + ... + 4128776.

It is an arithmetic number, because the mean of its divisors is an integer number (222940188).

Almost surely, 2^2105545965 is an apocalyptic number.

It is an amenable number.

2105545965 is a deficient number, since it is larger than the sum of its proper divisors (1461497043).

2105545965 is a wasteful number, since it uses less digits than its factorization.

2105545965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8257068.

The product of its (nonzero) digits is 270000, while the sum is 42.

The square root of 2105545965 is about 45886.2284896024. The cubic root of 2105545965 is about 1281.7054831413.

The spelling of 2105545965 in words is "two billion, one hundred five million, five hundred forty-five thousand, nine hundred sixty-five".